M4.3 earthquake 108 km N of Naze, Japan
A magnitude 4.3 earthquake struck 108 km N of Naze, Japan on Mon, Mar 16, 1981, 6:06 AM JST (21:06 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 111 km N of Naze, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1981-03-15 21:06:48 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 29.346° N, 129.551° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.3 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · 2 stations |
| 5.38 | Mw, moment | ISCGEMSUP | Final · ±0.2 |
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.6105 km N of Naze, Japan · 16637 days ago · 33 km deep · 16 km away
- 5.176 km NNW of Tatsugō, Japan · 16637 days ago · 21 km deep · 40 km away
- 4.5Ryukyu Islands, Japan · 16637 days ago · 33 km deep · 17 km away
- 4.7109 km N of Naze, Japan · 16637 days ago · 33 km deep · 16 km away
- 5.389 km N of Tatsugō, Japan · 16636 days ago · 56 km deep · 10 km away
- 4.494 km N of Naze, Japan · 16636 days ago · 33 km deep · 23 km away
- 5.2107 km N of Naze, Japan · 16636 days ago · 33 km deep · 19 km away
- 4.6107 km N of Naze, Japan · 16636 days ago · 33 km deep · 12 km away
- 5.379 km N of Tatsugō, Japan · 16635 days ago · 21 km deep · 20 km away
- 5.4111 km N of Naze, Japan · 16634 days ago · 33 km deep · 13 km away
- 4.6117 km N of Naze, Japan · 16629 days ago · 33 km deep · 9 km away
- 5.0108 km N of Naze, Japan · 16604 days ago · 33 km deep · 17 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001cqn (also filed as iscgemsup629926). Read Fri, Oct 2, 2026, 3:21 PM UTC.